Agesipolis III in the context of "Agiad"

The Agiad dynasty (Ancient Greek: Ἀγιάδαι, Agiádai) was one of the two royal families of the ancient Greek city-state of Sparta. They ruled jointly along with the Eurypontid dynasty, possibly from the 8th century BC onwards, being the senior of the two houses. The hypothetical founder of the dynasty was Agis I, possibly the first king of Sparta at the end of the 10th century BC, who subsequently gave his name to the dynasty. The two lines, who maintained an enduring rivalry, were, according to tradition, respectively descended from the twins Eurysthenes and Procles, both descendants of Heracles. The most famous member of the Agiad dynasty was Leonidas I, known for his heroic death at the Battle of Thermopylae in 480 BC. The last Agiad king was Agesipolis III, deposed by the Eurypontid Lycurgus in 215 BC.

Lycurgus (Ancient Greek: Λυκοῦργος Lykurgos; fl. 219–217 BC) was a king of Sparta, who reigned from 219 BC until his death shortly before 211 BC. Of obscure background and possibly of non-royal descent, Lycurgus led Sparta in the Social War against Macedon with varying success, and underwent multiple exiles during his checkered reign. He also effectively abolished the traditional Spartan diarchy by dethroning his fellow king Agesipolis III and ruling Sparta as its sole monarch.